tv ABC World News With Diane Sawyer ABC April 16, 2013 5:30pm-6:00pm PDT
in the video, the authorities say the white smoke indicates a bomb built with low-velocity explosive mixtures, not military grade. >> something just blew up! >> run! >> they may not have had the resources as we've seen in other bomb attacks, but they knew how to make the bomb go boom. >> reporter: experts say the large pieces of metal, as seen here in the air, suggest the bombs might have been concealed in or under a mailbox or trash barrel, as one witness described. >> i literally saw the garbage barrel explode. i saw at the flash, the fire, the smoke, and i ran as fast as i could. >> reporter: mike sullivan is the former head of the atf. >> all the evidence they collect it is, it might not look like much. but to investigators, every small piece of evidence they collect will be a treasure trove. >> reporter: if the fbi belief about the pressure cooker bears out, it will be no surprise to counterterrorism officials who have warned about their possible use with readily available components for years.
there are numerous descriptions online about how to build a pressure-cooker bomb, including this detailed one posted in an al qaeda internet publication. april is also a month with significance for domestic terror groups. the month of the waco raid and the oklahoma city bombing. as president obama made clear today, there's still no evidence of who is responsible for this act of terrorism. >> this was a heinous and cowardly act, and given what we now know about what took place, the fbi is investigating it as an act of terrorism. >> reporter: the fbi agents tell us they have tons of video, and somewhere in there will be a picture of the person who planted these two bombs, diane. >> speaking of pictures, i want to ask you about a photo that everybody was e-mailing today. it is a man standing up on top of a roof. you can move in there, you see it right there. what do you know about it? >> reporter: well, it's very intriguing, but authorities say they're giving it no special priority. it's one of many tips and leads they're following.
they're really focusing on the person who had that unusually heavy black bag the day of the race. >> as you said the strongest clues are in the nature of the bomb. up next, abc's senior national correspondent jim avila, shows us just how far the blast from the bombs traveled. >> reporter: the killer bombs likely contained less than two pounds of common black powder explosive, says one of the nations leading ied experts. even leaving the characteristic white smoke. bombs designed to spread terror and death with a lethal blast of metal shrapnel. >> looks like he was out to kill and maim. >> reporter: hold it right there. here we see windows blown out here, but the buildings themselves are intact. what does that tell us about what this bomber wanted to do? >> that he did not want to take down the building. that wasn't his main target. it was to disrupt the marathon and kill people in that immediate area.
>> reporter: houston says this is classic ied design, the kill zone from the blast, one to two yards. according to the accounts from the bomb's site, powerful enough to knock a runner off his feet ten yards away. and topple another man on his couch from the third floor of the building next door, 20 yards away. >> it looks like a basic design of an improvised explosive device. however, the placement of it is sophisticated. they understood what they wanted to do. >> reporter: the pressure cooker is well known by the military as a lethal bomb carrier, covered in training manuals and explained in video. >> reporter: they're small, easily made, even crude. but our bomb experts say the planning and execution tell us that the terrorist was well-trained. >> i would be surprised if it's a lone actor. he's definitely been working on this for a while, the planning and working on putting the devices together. >> reporter: but none of the clues so far tell our expert whether this terrorist was part
of any one organization. diane? >> thanks so much, jim. now from boston, we turn to breaking news we have at this hour. a letter addressed to a united states senator was intercepted, found to contain a deadly poison. the news is still coming in and pierre thomas has all the late-breaking details right now out of washington. pierre? >> tonight the senate is on high alert after a letter bound for one of its members was intercepted because it may have been tainted with poison. sources are telling us tonight a letter addressed to mississippi senator roger wicker tested positive for ricin in a field test in maryland. the letter was post marked memphis, tennessee. tonight there's no information on who may have sent it. ricin is der reiffed from caster beans and can be lethal if ingested or inhaled. field tests to detective it are unreliable. a source tells us the letter is
tested again in a laboratory to get a definitive result. the package was intercepted and never reached the capital complex. still, additional security is being put in place. all mail to capitol hill has been stopped. such scares have happened in washington before. in 2004, a letter containing ricin powder shut down three senate offices for two days. extraordinary precautions were taken to keep senators and their staff safe. in 2003, the secret service revealed president bush received a letter containing a vial of ricin. there's no indication this is tied to boston, diane. >> pierre thomas staying on this story as it unfolds tonight. but now we return back to boston and one more thing we think we know about the bomber. he may have studied last year's race. pinpointing the moment the
maximum number of runners crossed the finish line. last year, four hours and 18 minutes in, the maximum number, that's almost exactly the time his bomb exploded. from boston tonight we have new images of a city interrupted, half-eaten sandwiches abandoned where the bombs went off. as dan harris gives us new insight, taking us behind those images we all watched together as it happened. >> reporter: tonight new video is giving us fresh, frightening insight into the attacks. look at this cellphone footage, shot by a spectator standing between the two bombs. after the first explosion, there's confusion, but relative calm as people move away. but then after 11 seconds go by -- after the second sploge
explosion, panic. in the aftermath, you can see people running alongside walks, carpeted in glass -- and victims. >> are you okay? >> i have a victim here with shrapnel in the leg. >> reporter: police scanner traffic takes us further inside those moments. >> get another ambulance down here at 755 boylston. >> they are on the way, sir, they are on the way. >> reporter: so many images, the face of nicole gross, one of three members of the same family injured. and that 78-year-old runner who was knocked down but picked himself up and finished the race. today boston was crawling with armored vehicles, uniformed national guardsmen and officers armed with high powered rifles. on a normal tuesday afternoon, this part of town would be crawling with foot and road traffic, but today it's on lockdown. police have set up a massive crime scene. to give you an idea of the size of this thing, take a looka the map. we are on just one corner of what is a 12-block crime scene
right in the heart of this city. also today we got our first details of those who did not survive. 8-year-old martin richard. and 29-year-old krystle campbell. >> i couldn't ask for a better daughter. i can't believe this has happened. >> reporter: her mother said that her death was just a waste. late today we learned that the third victim was a graduate student at boston university. we do not have a name there. and of course scores of other people were injured in this attack. the current total stands at 176. diane, to give you a sense of how boston is coming together in the wake of these attacks, late today, the red cross announced that it is now turning away blood donors. they say they are simply at capacity. >> all right, thank you, dan. and thinking of everyone in boston today, president obama had a message for the bombers and the world. listen. >> the american people refuse to be terrorized. because what the world saw
yesterday in the aftermath of the explosions were stories of heroism and kindness and generosity and love. so if you want to know who we are, what america is, how we respond to evil, that's it. selflessly, compassionately, unafraid. >> and we have more new images from this day in boston. families opening their homes to stranded marathoners. a young boy collecting his thoughts in a church near the bombings, and a lone athlete defiantly running along the shores of the charles river early this morning. still ahead right here on "world news," the 8-year-old member of the little league and the town that is rallying around his family tonight. as your life and career change, fidelity is there for your personal economy, helping you readjust your retirement plan
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tallest on his team. just a marvel to watch on the field. just a delightful young boy. >> reporter: friends say the family went to the boston marathon every year. but one of those twin explosions ended his short life, sending his mother to the hospital with a serious head injury. his younger sister lost a leg. neighbors in this close knit community are now grieving along with martin's father. >> i was outside with my dog. i saw him get out of the car. he was dressed in hospital scrubs and i said, oh, my god, bill, are you okay? and he didn't even answer me. >> reporter: an outpouring of support and prayers for this family. on this facebook page. in a statement bill richards said, we thank our family and friends, those we know and those we have never met, for their thoughts and prayers. >> when we would see them, they would all be together, whether it was at church, going to school, on the sports field, in the naned, -- neighborhood, they were a very active family in our community.
pillars of the community. >> reporter: this community now reeling. its compassion etched in chalk on the driveway of the family's home. flowers await their return. the town's clock, frozen to mark that moment and the flag at half staff outside martin's school where teachers tonight describe him as an energetic young boy who had big dreams and high hopes for his future. a vigil is taking place tonight at the richards' family church. an outpouring of prayers for martin's mother and sister who remain in the hospital. >> in boston for us again tonight, linsey davis. and when we come back, you'll meet a surgeon who knew about trauma in afghanistan and iraq. he ran the marathon, and then faced it again. copd includes emphysema and chronic bronchitis. spiriva is a once-daily inhaled copd maintenance treatment that helps open my obstructed airways for a full 24 hours.
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casualties, without even examining the patients in detail, i could just see the pattern of injury, and i thought to myself, this is exactly like i was back in iraq or afghanistan. >> you're finding metallic particles, small metal balls, nails, screws in these wounds? >> that's right. we're not exactly sure what they are. whether they're bb's or metal ball bearings. we're also finding nails and screws and other pieces of metal. they're twisted and deformed. it's not clear whether they're from the bomb itself or the environment around the bomb. >> but the bomb may have hit other metal objects that then splintered apart? >> this is what i'm hearing, although i certainly don't know that for a fact. the operations that we have performed are identical to the kind of work we would do in the army at a forward surgical team or combat support hospital. >> well, again, we know there is
heroism, large and small at all times at mass general, and we thank you so much for joining us. i know you've got at least five surgeries today. we'll let you go back to work. >> thank you very much. and coming up next here, a nation on edge. other cities in america, after the tragedy in boston. and chantix helped me quit. i honestly loved smoking, and i honestly didn't think i would ever quit. [ male announcer ] along with support, chantix (varenicline) is proven to help people quit smoking. it reduces the urge to smoke. it put me at ease that you could smoke on the first week. [ male announcer ] some people had changes in behavior, thinking or mood, hostility, agitation, depressed mood and suicidal thoughts or actions while taking or after stopping chantix. if you notice any of these stop taking chantix and call your doctor right away. tell your doctor about any history of depression or other mental health problems, which could get worse while taking chantix. don't take chantix if you've had a serious allergic or skin reaction to it. if you develop these stop taking chantix and see your doctor right away as some can be life-threatening.
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♪ all around the world today people of all nations were sending messages of solidarity to boston. and in this country too, there was new meaning to the injunction -- see something, say something. tonight the newest member of our abc news family veteran reporter abc's byron pitts is here to tell us about this new normal in american cities tonight. >> reporter: this is america's new normal. the moment terror strikes at home, the nation coils. coast to coast law enforcement, at los angeles's union station, a muscular police presence, and and a measure of anxiety felt
lie commuters. >> it puts you on edge. >> we're not safe anywhere. >> it could happen anywhere, even here in california. >> reporter: at lax across to boston, memories of 9/11. >> that faith that you have in security of our nation, it's kind of shaken. >> reporter: in downtown seattle, streets were shut down due to a suspicious backpack. the bomb squad sent in its robot, inside a hair dryer. east coast airports had the jitters. at logan airport, delays over suspicious passengers and packages. at new york laguardia, another suspicious item and passengers forced to wait outside in the street. >> across new york city both signs of increased security. and the comforting sound of resiliency. >> i think if i become nervous i'm giving in to something that's going to make me underpowered. >> reporter: carlos rosario seemed to speak for many today. >> as citizens, we have to be responsible one to another. we have to be our brother's keeper.
>> reporter: meanwhile in boston, vows unbroken. >> we're strong people and we're not going to let anyone push us around. you mess with one of us, you mess with all of us. >> reporter: all across the country, people sent their best wishes and prayers to boston. we've seen this in america before, when a crisis hits home, this nation will rally. >> so true and byron, it is great to have you with us at abc. thank you so much. and now if you'll allow us tonight, there's a member of our abc family who has died. a man who has been absolutely critical to the kind of reporting we've done today, this week, and so many times before. preston davis, 35 years ago began as an engineer here and rose to become president of broadcast operations and engineering. the first african american president of any division at abc, known, respected, loved by every single person at every level of abc. and tonight we remember preston
davis, who was 63 years old. >> and we thank you for watching the first half of this special one-hour edition of "world news." some of you will be leaving us now, but the others of you, we hope you'll stay with us as we continue with breaking news, the very latest in this special edition of "world news."
and tonight the fbi has found clues in those tapes, the moment of impact, what did they see? who do they new believe -- now believe happened? let's begin with abc's brian ross, with the latest right now. brian? >> good evening. there are important new clues into the bomb and the bomber. but the road begins with an examination of that bomb. important new details have emerged from fbi agents who say they have recovered a significant part, a mangled piece of one of the bombs, recovered on the scene. it turns out to be a common kitchen item. they say it is a medium-sized pressure cooker that was packed with explosives, wires, and an electronic circuit board, as well as tiny nails and ball bearings, in order to maximize the damage to anyone in the blast zone. authorities believe they can examine that particular half bomb now. they've got it at the base in virginia, where it's being
examined by fbi technicians. they believe they can find signatures and footprints that would be unique to that bomb and perhaps match it up to other bombs somewhere else in the world, somewhere else in this country. that will be the road to finding the bomber. the fbi put out a plea to anyone who saw a person carrying an unusually heavy black bag on the day of the race. they believe the person brought those two bombs in black bags and planted them along the route of the race. those are two important developments today. >> that's right, brian. and as you've been saying, there's a lot of surveillance tape of that area. we are told it's the most intensely surveilled by cameras in the entire city of boston. thanks to you. now we want to turn and get more on the breaking news out of washington, that letter or package addressed to a center -- senator that tested positive for a type of poison. and pierre thomas joins us.